Jim Henson

as Kermit the Frog / Rowlf / Dr. Teeth / Waldorf / Doc Hopper's Men / Link Hogthrob / Swedish Chef (voice)

Frank Oz

as Miss Piggy / Fozzie Bear / Animal / Sam the Eagle / Doc Hopper's Men / Marvin Suggs / Swedish Chef (hands) / Motorcycle Guy (voice)

Jerry Nelson

as Floyd Pepper / Robin the Frog / Crazy Harry / Lew Zealand / Camilla / Dr. Bunsen Honeydew (assistant) (voice)

Richard Hunt

as Scooter / Statler / Janice / Sweetums / Beaker / Fozzie Bear (assistant) (voice)

Dave Goelz

as The Great Gonzo / Dr. Bunsen Honeydew / Zoot / Doglion / Iraqian in El Sleezo Cafe / Pig (voice)

Charles Durning

as Doc Hopper

Austin Pendleton

as Max

Edgar Bergen

as Himself / Charlie McCarthy (voice)